JPS604098B2 - Laminated sheet peeling device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to techniques for handling flexible sheets such as textiles, in particular for manual picking up of sheets or for automatic or semi-automatic processing machines such as clothing manufacturing machines. The invention relates to a laminated sheet separating or peeling device for use with a pick-up device such as that described in U.S. Pat. No. 4,009,786 for feeding and stacking textiles.

BACKGROUND OF THE INVENTION To make clothing and other products from cloth or similar flexible sheet materials, it is common to stack pre-cut fabrics and send them to processing machines for stitching or other processing.

Other products, such as hangings, shoes and slippers, clothing accessories, and interior items such as car seat covers, can also be made by sewing or gluing cut sheet materials together. Typically, the productivity of these products is regulated by the operator's ability to control the operation of picking up individual sheets of material that have been cut, assembling mutually compatible sheets of material, and sending it to adjustable processing machinery. be done.

When making products from textiles or similar flexible materials, perform specific operating functions such as controlling the stitching direction, positioning of the workpiece material, starting and stopping the machine, and other known desired functions. Various processing machines designed to do so are known.

In order to feed sheet material to such sewing machines and other machines, various devices have been proposed for controlling the material and for separating individual materials from stacks or stacks of cut material. ing.

Traditionally, the methods used to feed workpiece materials into such machines have had varying degrees of success due to the porosity of the material, variable processing conditions, and flexibility of the fabric. . And the difficulty of separating one stacked sheet of material from the next poses an additional problem. In addition to the device of the aforementioned U.S. Pat. No. 4,009,786, many other devices have been proposed to solve the problems of feeding textiles.

Among them, one device uses a method of adhering to a sticky surface, another device uses a fork-like member that closes inward with a chuck method, and another device uses a highly abrasive surface to attach the surface layer. still other devices use uniformly beveled needles of cardcloth for unidirectional frictional contact and pick-up, still other devices use suction devices is used. Various means are available for separating the top sheet of a plurality of laminated sheets (also simply called a laminated sheet or stack) from the top sheet without shifting the position of the other sheets in the four laminated sheets. It is used.

Such misalignment of the sheet prevents accurate engagement with the next sheet, resulting in inaccurate positioning. Although this type of device was effective for a limited number of types of textiles, it is effective for sheet-like materials such as textiles and knitted materials that have surfaces where the fluffy surfaces intertwine and create strong bonding forces between laminated sheets. does not solve the problems associated with the separation of

This is especially true in the case of circularly knitted tubular fabrics, and in other cases where the edge threads become tangled or, in the case of thermoplastic threads, fused together when a length of sheet is cut from a length of fabric. Sometimes I do. Various attempts have been made to overcome the above-mentioned problems by applying suction to the laminated sheet, by engaging the green of the top sheet to lift it, or by inserting a rigid thin plate. was not successful.

The latter method is unreliable because one of the two sheets bonded together is twisted and unsupported. The object of the invention is to unite sheets that are stacked and strongly bonded together, even if they are bonded one by one, by first separating them and then firmly holding down the second sheet in the stack. To provide a device capable of positively engaging the top sheet and peeling or separating it from the second sheet.

Another object of the present invention is to provide a method and apparatus that allows the control of laminated sheets to be maintained to prevent shear movement or displacement of the laminated sheets during sheet separation and transfer cycles.

Yet another object of the invention is to maintain the cut portion of the top sheet when mechanically lifting a tall stack of soft sheets during the feeding process.

When processing very soft, flat sheets in stacks of depth or height that are economically feasible,
Maintaining stack alignment is an important issue. The above object is achieved by a device according to the invention having the following configuration.

That is, the device of the present invention includes a support bracket, a fluid cylinder supported substantially horizontally and rotatably on the support bracket, connected to a fluid pressure source, and having a piston and a piston rod, and a fluid cylinder having a piston and a piston rod, the fluid pressure source and the fluid a control valve that is interposed between the cylinders and supplies pressure fluid from the fluid pressure source to the fluid cylinder in a pulsed manner to cause the piston rod to protrude in an impulsive manner; and a control valve that is fixed to the fluid cylinder. and a bifurcated guide member having a pair of legs extending in the direction of the sea bream, which are arranged oppositely on both sides with the piston rod in between; , a pair of guide slots each consisting of a slot portion extending linearly in the axial direction of the fluid cylinder and a slot portion extending upwardly at the front end of the linear slot portion; and a pair of guide slots at the tip of the piston rod. The piston rod is rotatably connected thereto with the piston rod of the bracket, and has a pin slidably engaged in the guide slot, between the opposing legs of the bifurcated guide member. a slide block that is slidably arranged and that is guided by the guide slot and movable relative to the bifurcated guide member when the piston rod protrudes; and a slide block that is attached to the lower surface of the slide block and moves together with the slide block. a friction pad capable of contacting the uppermost sheet material of the laminated sheet materials; and a friction pad fixed to the support bracket and configured to allow the slide block to move upwardly above the bifurcated guide member. The slide block includes a member disposed at a supporting position within the slide block and restricts the upward movement of the slide block to a certain limit. The friction pad is a carding cloth mounted on a slide block that can move in an arc while being guided by the bifurcated guide members when the fluid cylinder is energized.
th:cardclosing).

The assembly of the fluid cylinder, the bifurcated guide member, and the slide block is balanced on the support bracket so as to press against the upper surface of the laminated sheet with a relatively small pressure.

To facilitate rotation of the assembly, a source of pressurized fluid may be connected to both ends of the fluid cylinder via a support bracket and a rotatable block member. Such an indirect connection avoids the mechanical drag or resistance that would be exerted on the assembly if the pressure fluid hose were connected directly to the fluid cylinder. The peeling device of the present invention is most suitable for use in conjunction with the device for picking up, transporting, or combining sheet-like objects described in US Pat. No. 4,009,786.

In that case, the operations include, for example, the following steps: a step of engaging the peeling device of the present invention with the laminated sheet, a step of engaging the above-mentioned pick-up and transfer device with the laminated sheet, and a step of operating the peeling device to remove the laminated sheet. This is carried out by a step of peeling and shifting the topmost sheet at its side twill portion while holding the remaining sheets in a stack, and a step of operating a pick-up and transfer device to pick up the sheet peeled from the laminated sheet.
The present invention will be described in detail below with reference to embodiments of the drawings.

1 to 3, 5 is a peeling or separating device according to an embodiment of the present invention, 6 is a pick-up transfer or feeding device (hereinafter simply referred to as pick-up device) described in U.S. Pat. No. 4,009,786, and 7 is a suitable pick-up device. A sheet of fabric stacked in a container such as a magazine, usually biased upwards. As shown in detail in FIGS. 4-6, the device 5 comprises a substantially U-shaped support bracket 8, a movable air cylinder 9, and a block member that attaches the air cylinder 9 to the bracket 8 by a pair of pivot pins 11. Consisting of 10.

The actuating rod 12 fixed to the piston 13 is connected to the cylinder 9
This rod 12 protrudes from and extends from the bifurcated guide portion 1.
The bush 14 is arranged between the cylinder 9 and the cylinder 9.

A bifurcated connecting block 16 is fixed to the outer end of the piston rod 12, and the slide block 1 is attached to this connecting block 16.
8 are pivotally connected by a pin 17. Corresponding slots 19 are bored in the front half portions of both legs of the guide member 15, and these slots 19 are provided at a portion extending linearly in the axial direction of the cylinder 9 and a front end of this linear portion, respectively. The above-mentioned pin 17 is inserted into and engaged with the above-mentioned straight part of the slot 19, and the connecting block 16 is guided by the guide member 15 so as to move linearly.

The slide block 18 also has a pin 20, and this pin 20
is inserted into the slot 19 of the guide member 15, and the slide block 18 is guided to move linearly and upwardly in the curved portion of the slot 19. Carrier member 2 with a friction pad 22, such as a clothing pad
The leg 23 of the slide block 18 extends upwardly along the distal end surface of the slide block 18, and the upper end of this leg 23 is attached to a contact plate or a regulating plate 24 as described later during the operation of the device (see FIGS. 2 and 3).
It is becoming more and more popular.

The air cylinder 9 is attached to the block member 1 via a split bush 25 and a lock screw 26.
The mounting position of this assembly on the bracket 8 can be easily adjusted so that the necessary pressure can be applied to the laminated sheet 7.

It is desirable that the pressure applied to the laminate sheet 7 by the friction pad 22 not exceed about 57 to 114 grams (2 to 114 grams) in most cases when processing pliable fabrics.

Each pivot pin 11 passes through a corresponding bore 27 in the support bracket 8 and is engaged in a tapered recess 28 in the block member 10.

Pivot pin 11 is secured in position by a suitable locking screw. Each pivot pin 11 is bored with an annular groove 29 and passages 30, 31, which groove 29 communicates with passages 32, 33 of the bracket 8, and these passages 32, 33
are connected to hoses 34 and 35, respectively.

One of these hoses is connected to a source of air pressure and the other to an exhaust port. Passage 3 of both pivot pins 11
1 pass through passages 36, 37 and 38, 39, respectively, and these passages are connected to hoses 40, 41 connected to both ends of cylinder 9, respectively.

Since the structure is such that pressurized air is introduced into the cylinder 9 via the support bracket 8 and the block section 10, even if the assembly of the block section 10 and the cylinder 9 tilts or rotates, the hose 40, 41 move with the assembly so that they do not exert any resistance or resistance to the movement of the assembly, as would be the case if the compressed air supply hose were connected directly to the ends of the cylinder.

The air pressure line or outlet is provided with an air pulse control device or switch and a multi-way valve.

Air pressure is 80-10. s. i. A range of about 500 seconds is desirable, and the controller operates for about 500 seconds. Picking up device 6
The operation of the peeling device of the above embodiment when used together with the following will be explained. FIG. 1 shows the pad 22 repositioned on the top sheet of the laminated sheet 7. As shown in FIG. This pad is biased or urged into position by adjusting the position of the air cylinder 9 in the block member 101 so as to apply a small pressure on the laminate sheet 7, not exceeding the range described above. A pick-up device 6 placed above the laminated sheets is brought into contact with the sheets under pressure.

At this time, the multi-way switching valve of the air pressure source is in a position where it does not send pressurized air to the hose 34. Note that the hose 35 is connected to an exhaust port. Then, by operating the control device and the multi-valve, a pulse of pressurized air is sent to one side of the piston 13 of the cylinder 9 through the hose 34, the passages 32, 30, 31, 36, 37 and the hose 40, and the piston rod 1
2 is quickly moved outwards, and the slide block 18 is also moved outwardly through the guide member 15 and subsequently upwardly. A sudden force is then applied to the sheet via the pad 22, causing the topmost sheet to move in a straight line laterally relative to the next lower sheet by a shearing effect, which then lifts this sheet. Peels or separates from the underlying sheet. When the slide block 18 and the carrier 21 are rotated upward, the legs 23 of the carrier 21 hit the regulation plate 24, which causes the guide member 15 to move downward and the elastic pad 42 to move under the peeled sheet. Firmly contact the laminate sheet to keep it aligned.

When the pulsed air is sent to the stripping device, pressurized air is sent to the pick-up device 6 whose needle or other piercing means firmly engages the top sheet of the stack to lift it. .

FIG. 2 shows the position of the peeling device, sheet and pick-up device at this stage of operation. While the lower laminated sheet is firmly held down by the guide section 15, the pick-up device 6 is further operated to lift the top sheet of the laminated sheet and move this sheet to another position as shown in FIG. Transport.

After the sheet is peeled off and transferred, the air pressure source Taman valve is operated to move the piston 13 back, and the piston rod 12,
The connecting block 16 and slide block 18 are returned to the positions shown in FIG. 1 in preparation for the next operation cycle.

Above, the peeling device of the present invention has been described in terms of its cooperative or complementary operation relationship with the pick-up device 6.

That is, the method of picking up and transporting each sheet from a laminated sheet using the device of the present invention includes a step of bringing the peeling device of the present invention into contact with the laminated sheet, a step of bringing the picking device 6 into contact with the laminated sheet, and a step of bringing the peeling device into contact with the laminated sheet. While applying an impact force to the laminated sheet or the top sheet in the stack while holding the other sheets in a stacked state, the top sheet is caused to slide at one end portion against the bottom sheet. This method includes a step of lifting and displacing or peeling the sheet, and a step of operating a pick-up device to lift and transport the peeled sheet. Of course, it is also possible to use the peeling device alone to separate or peel the sheet material for manual or mechanical picking up, without using it together with the picking up device.

A pick-up device of the type described in U.S. Pat. No. 4,009,786 can be preset to pick up a scheduled number of sheets at a time; in such cases, the device of the present invention may be operated repeatedly before operating the pick-up device. It is also possible to peel off or separate a predetermined number of sheets.

As described above, according to the present invention, the friction pad is moved upward from the horizontal direction from the green part of the laminated sheet toward the inside of the sheet to engage with the edge of the top layer sheet, and The green part of the residual laminated sheet is peeled off from the edge of the residual laminated sheet below, and the green part of the residual laminated sheet is automatically pressed by the interlocking movement of the member that guides the movement of this friction pad, thereby preventing the residual laminated sheet from shifting or deforming. It is possible to obtain a peeling device for a laminated sheet body that can reliably peel off the top layer sheet with a simple structure without causing any dropping.

Note that the term "sheet" or "sheet-like body" used in this specification should be understood in the broadest sense, and is not limited to woven or knitted fabrics, but includes various other elegant sheet-like bodies. Of course, it also includes.

[Brief explanation of the drawing]

1, 2, and 3 are side views showing different operating states when an apparatus according to an embodiment of the present invention is used together with a sheet-like material pick-up and supply device, and FIG. 4 is an embodiment of the present invention. FIG. 5 is a cross-sectional view taken along line 4-4 in FIG. 1, FIG. 5 is a sectional view taken along line 5-5 in FIG. 4, and FIG. 6 is a sectional view taken along line 6-6 in FIG. FIG. 5... Peeling device, 6... Picking up transfer (supply) device, 8... Support bracket, 9... Serisoder, 10... Block section village, 12...・・・・・・
Piston rod, 13...Piston, 15...
...Guide village, 16...Connection block,
18...Slide block, 17,20...Pin,
19...Guide slot, 22...Friction pad. Younger brother's figure 2 figure 3 figure 4 bag ta figure inferior figure

Claims (1)

[Scope of Claims] 1: a support bracket; a fluid cylinder supported substantially horizontally and rotatably on the support bracket and connected to a fluid pressure source, having a piston and a piston rod; and a fluid cylinder having a piston and a piston rod; a control valve that is interposed between the cylinders and supplies pressure fluid from the fluid pressure source to the fluid cylinder in a pulsed manner to cause the piston rod to protrude in an impulsive manner; a bifurcated guide member having a pair of legs extending in the axial direction and arranged oppositely on both sides with an interval between them;
A slot portion is bored at opposing positions of the leg portions of the bifurcated guide member and extends linearly in the axial direction of the fluid cylinder, and a slot is connected to the front end of the linear slot portion and curves upward. a pair of guide slots comprising a pair of guide slots; a pin connected to the distal end of the piston rod so as to be rotatable relative to and movable with the piston rod and slidably engaged in the guide slot; a slide block that is slidably disposed between the opposing legs of the bifurcated guide member and that is movable relative to the bifurcated guide member while being guided by the guide slot during the protrusion movement of the piston rod; a friction pad that is attached to the lower surface of the slide block and can be moved together with the slide block to contact the top sheet of the stacked sheets; and a friction pad that is fixed to the support bracket and located above the bifurcated guide member 1. A peeling device for a laminated sheet material, comprising: a member disposed at a position where the slide block comes into contact with the slide block during its upward movement; and a member that restricts the upward movement of the slide block to a certain limit.